Mold-ramming apparatus.



H. P. MAODONALD.

MOLD RAMMING APPARATUS.

APPLICATION FILED 00119, 1912.

1,059,623. Patented Apr. 22, 1913.

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COLUMBIA PLANOOIAPH CO-WABHINGTQNI D- t.

UNITED STATES PATEN T @FFTQE.

HARRY P. MACDONALD, OF MONTOLAIR, NEW JERSEY, ASSIGNOR TO THE SNEAD &CO. IRON WORKS, 015 JERSEY CITY, NEW JERSEY, A CORPORATION OF NEWJERSEY.

MOLD-RAMMING APPARATUS.

Specification of Letters Patent.

Patented Apr. 22, 1913.

To all whom it may concern:

Be it known that I, HARRY P. MACDONALD, a citizen of the United States,residing at Montclair, in the county of Essex and State of New Jersey,have invented certain new and useful Improvements in Mold-HammingApparatus, of which the following is a specification.

This invention relates to mold ramming apparatus and particularly to thetype of apparatus wherein the sand is rammed 1n the flask by means of aheavy roller which is passed over the flask. It is designed particularlyfor use in ramming long, flat flasks and it has for its primary objectthe provision of an improved arrangement of removable supportingmechanism for the roll whichis simple in construction and operation andwhich requires a minimum of operative space. This, together with suchother objects as may hereinafter appear or are incident to my inventionI attain by means of a construction which I have illustrated inpreferred form in the accompanying drawings, wherein- Figure 1 is a planView of a roll ramming apparatus embodying my invention; Flg. 2 is aside elevation of the device illustrated in Figure 1; and Fig. 3 is apartial sectlon on the line IIIIII of Figure 1 and illustrates a detailof the invention.

In ramming mold flasks by mechanism of the roll ramming type,considerable difliculty is encountered in providing a suitable supportfor the roll, this being particularly the case where the mold flasks areof considerable length. In this general type of mechanism the sand isrammed or packed by means of a heavy roll which is supported over theflask by means of a track or other suitable support and it is one of theobjects of my invention to provide a support for the roll which willrequire but little head room and which can be readily removed or swungto one side, permitting of free access to the machine in placing andremoving flasks to and from operative position.

Referring to the drawings, it will be seen that I have shown a mainframework 7 which rests upon the foundry floor and is adapted to supportone or more mold flasks 8 as may be desired. A support for the roll ispivotally mounted on the framework 7, such support comprising a pair ofangle rails or tracks 9 which are bound together at their duter ends bymeans of a cross piece 10 and at their inner ends by means of a strap 11which is secured to the under sides of the rails. The framework 7 isprovided with two or more brackets 12 which are adjustably secured tothe framework by means of the bolts, 13. The roll supporting frame issecured to the brackets 12 by means of the hinges 14, one leaf of whichis secured to the bracket and the other to one of the side rails of theframework. The ramming roll 15 is provided with grooves 16 ateither end,said grooves being adapted to engage the upstanding legs of the rails 9and prevent their spreading during the ramming operation. The rollsupporting frame is adapted when in operative position to rest upon thetop edges of the flask 8 in the manner illustrated in Figure 3, in whichposition it serves as a sand retaining frame and retains the sand overthe flask. The roll, 15, is fastened in the yoke, 17, on which issecured a long operating bar, 18, which can be actu ated in any desiredmanner. When the roll is not in operation and the flasks are beingplaced in position or removed from the machine, the roll is supported onthe platform 19 which is located adjacent the inner end of the frame 7.The inner end of the roll supporting frame may be locked in positionwith respect to the platform 19 and the flask by means of the keeper bar20 which is mounted in the plate 21 and which engages a recess in theplatform. From the foregoing it will be seen that the roll supportingframe may be readily swung to one side, as indicated in dotted lines inFig. 3, thus permitting of the ready insertion or removal of the flasksin and from the machine. It will also be apparent that in hinging theroll supporting frame to one side of the machine, a small amount of headroom is required, thus adapting the device for use in foundries whichhave but a limited amount of working space.

In operating the apparatus, the flask is first placed in position on theframe 7, after which the roll supporting frame is swung into positionresting on the top of the flask 8 and the flask is thereafter filledwith sand, the roll supporting frame serving as an upset or sand frameto retain the sand in place during the ramming operation, as well as asupport for the roll. The method of operation is simple and expeditiousand the 1. lnvroll ramming apparatus, a roll, a.

platform adapted to support said roll when in inoperative position, amain frame adjacent the platform, a flask carried on said frame, andaroll supporting frame hinged at one side of the main frame and insubstantial alinement with the platform,

adapted when in operative position to support the roll over the flaskand when in inoperative position to lie on one side of the frame. clearof the flask.

2.- In.roll ramming apparatus, a roll,,a platformadapted to support saidroll when in inoperative position, a main frame adjacent the platform,a'flask carried on said frame, a roll supporting frame hinged at oneside of the main frame in substantial alinement with the platform,adapted when in operative position to support the roll over the flaskand when in inoperative position to lie on one side of the frame clearof the flask, and a latch on the roll supporting frame adapted to engagethe platform and maintain the frame in position.

3. In roll ramming apparatus the combination of a flask supportingframe, a flask carried thereby, a bracket mounted on one side-of theframe, a ramming roll, and a roll supporting frame hinged to the bracketand adapted when in operative position to support the roll over theflask and whenin inoperative position to lie to one side of the flasksupporting frame.

4;. In roll ramming apparatus, a roll, a, flask, a platform adapted tosupport the'roll.

when in inoperative position, amain frame adjacent the platform, and aroll supporting frame hinged at .one'side of the main frame and insubstantial alinement with the platform, adapted when inoperativepositionto support the. roll over theflask and when in.inoperative position tolie on one side of the, frame clear of the flask.

In, testimony whereof I have hereunto signed my-name in the presence ofthe two subscribed witnesses.-

HARRY P. MACDONALD.

Witnesses:

F; P. RANLETT, C. C. Grumman), Jr.v

Copies of this patent may be obtained-for five cents eachahy addressingthe Commissioner of 1?atents,:=

Washington, DJ 0.

